JPH04232104A - Studless tire - Google Patents
Studless tireInfo
- Publication number
- JPH04232104A JPH04232104A JP2416199A JP41619990A JPH04232104A JP H04232104 A JPH04232104 A JP H04232104A JP 2416199 A JP2416199 A JP 2416199A JP 41619990 A JP41619990 A JP 41619990A JP H04232104 A JPH04232104 A JP H04232104A
- Authority
- JP
- Japan
- Prior art keywords
- tire
- groove
- vertical
- groove depth
- siping
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 239000011324 bead Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
- B60C11/1204—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special shape of the sipe
- B60C2011/1213—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special shape of the sipe sinusoidal or zigzag at the tread surface
Landscapes
- Tires In General (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、氷上の走行性能、積雪
路面上の走行性能を保持しつつ乾燥した路面における走
行性能を向上しうるスタッドレスタイヤに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a studless tire that can improve running performance on dry road surfaces while maintaining running performance on ice and snow-covered roads.
【０００２】0002
【従来の技術】氷結路面、積雪路面を走行するには、従
来タイヤにチェーンを装着し、又はスパイクを打ち込ん
だスパイクタイヤが用いられてきた。しかし近年、スパ
イクによる路面損傷と、路面が削られることによって粉
塵が舞上がることにより、スパイクタイヤ及び硬いスパ
イクを用いたチェーンの装着は自粛の方向に進んでおり
、スパイクがないいわゆるスタッドレスタイヤが普及し
つつある。2. Description of the Related Art In order to drive on icy or snowy roads, spiked tires, in which chains are attached to tires or spikes are driven into the tires, have conventionally been used. However, in recent years, due to the damage caused by spikes to the road surface and the dust that is thrown up by the scraping of the road surface, people are refraining from installing spiked tires and chains with hard spikes, and so-called studless tires without spikes have become popular. It is being done.
【０００３】このようなスタッドレスタイヤにあっては
、従来、トレッドゴム層にセルロース混入ゴム、発泡ゴ
ム等を用いることによって氷上制動性能の向上が図られ
てきた。又前記氷上制動性能をさらに向上させるため、
タイヤのトレッド巾を広巾とし接地巾を大きくすること
が企てられている。In such studless tires, the braking performance on ice has conventionally been improved by using cellulose-containing rubber, foamed rubber, or the like in the tread rubber layer. In order to further improve the braking performance on ice,
Attempts are being made to widen the tread width of tires to increase the ground contact width.
【０００４】0004
【発明が解決しようとする課題】しかし接地巾を大にす
ることにより氷上制動性能が向上する反面、凍結のない
、積雪のない通常の乾燥路面において、わだちがある場
合トレッド巾が大きいことによって路面よりの外乱を受
け易くワンダリング性能が低下するという問題がある。[Problems to be Solved by the Invention] However, while increasing the tread width improves braking performance on ice, on a normal dry road surface without ice or snow, if there are ruts, the large tread width There is a problem in that wandering performance is degraded due to being susceptible to external disturbances.
【０００５】前記ワンダリング性能の向上を図るため、
トレッド表面の曲率半径を小さくする、トレッド端縁に
丸味を付ける等の改善が提案されているが完全な解決に
至っていない。[0005] In order to improve the wandering performance,
Improvements have been proposed, such as reducing the radius of curvature of the tread surface and rounding the edges of the tread, but no complete solution has been reached.
【０００６】発明者らは、接地面内のサイピング、特に
接地面の外縁近傍に位置するサイピングに着目し、該サ
イピングの形状、寸法を規制することにより本発明を完
成させたのである。The inventors focused on the siping within the ground plane, particularly the siping located near the outer edge of the ground plane, and completed the present invention by regulating the shape and dimensions of the siping.
【０００７】本発明は、氷上及び雪上における走行性能
を損なうことなく乾燥路面におけるワンダリング性能な
どの走行性能を向上し、操縦安定性を高めうるスタッド
レスタイヤの提供を目的としている。An object of the present invention is to provide a studless tire that can improve running performance such as wandering performance on dry road surfaces without impairing running performance on ice and snow, and can improve steering stability.
【０００８】[0008]
【課題を解決するための手段】本発明は、正規リムに装
着しかつ正規内圧を充填するとともに正規荷重を付加し
た正規状態においてトレッド表面が接地する接地面内、
しかも該接地面のタイヤ軸方向外縁点（Ｅ）、（Ｅ）間
の長さである接地巾（ＳＷ）の０．０２倍以上かつ０．
０７５倍以下の距離を前記外縁点（Ｅ）からタイヤ軸方
向内方に隔てる範囲に、タイヤ周方向にのびるとともに
溝開口巾を０．４ｍｍ以上かつ１．２ｍｍ以下、溝深さ
を前記トレッド表面に設ける主溝の溝深さの０．２倍以
上かつ０．８倍以下とした少なくとも１条以上の縦サイ
ピングを設けてなるスタッドレスタイヤである。[Means for Solving the Problems] The present invention provides a method for providing a contact surface in which the tread surface contacts the ground in a normal state in which the tread surface is mounted on a normal rim, filled with a normal internal pressure, and a normal load is applied.
Moreover, it is 0.02 times or more of the ground contact width (SW), which is the length between the tire axial outer edge points (E) and (E) of the ground contact surface, and 0.02 times or more of the ground contact width (SW), and 0.
The tread surface extends in the tire circumferential direction, and has a groove opening width of 0.4 mm or more and 1.2 mm or less, and a groove depth of 0.4 mm or more and 1.2 mm or less, in a range that is axially inwardly inward from the outer edge point (E) by a distance of 0.075 times or less. This is a studless tire provided with at least one vertical siping whose depth is 0.2 times or more and 0.8 times or less the depth of the main groove provided in the main groove.
【０００９】なお縦サイピングは１条又は２条が好まし
いが、３条以上条設けてもよく、又図４に示す如くジグ
ザグ溝であってもよい。It is preferable that the vertical sipes have one or two sipes, but three or more sipes may be provided, or they may have zigzag grooves as shown in FIG.
【００１０】0010
【作用】通常のタイヤが乾燥した路面走行する際該路面
に存在するわだちの側壁にショルダー部が乗った場合に
は、該タイヤは変形し、該タイヤにキャンバースラスト
及びコーナリングが生じる。スタッドレスタイヤの場合
にはキャンバースラストよりもコーナリングフォースが
大であることによるワンダリングが発生していることに
起因する。[Operation] When a normal tire runs on a dry road surface, if the shoulder portion rides on the side wall of a rut on the road surface, the tire is deformed and camber thrust and cornering occur in the tire. This is because in the case of studless tires, wandering occurs due to the cornering force being greater than the camber thrust.
【００１１】本発明は接地面の外縁点Ｅの内側かつ外縁
点Ｅ近傍にタイヤ周方向にのびる縦サイピングを設ける
ことによって、外縁点Ｅ近傍に位置するブロックの剛性
を下げワンダリング性能を改善することが出来たのであ
る。[0011] The present invention reduces the rigidity of the block located near the outer edge point E and improves wandering performance by providing vertical sipes extending in the tire circumferential direction inside and near the outer edge point E of the ground contact surface. It was possible.
【００１２】前記縦サイピングは、接地巾（ＳＷ）の０
．０２倍以上かつ０．０７５倍以下の距離を接地面の外
縁点Ｅからタイヤ軸方向内方に離れる範囲に位置させて
いる。０．０２倍未満ではブロック欠けが生じやすく、
又０．０７５倍をこえるとタイヤ半径方向のエッジ成分
が少なくなり雪氷路を走行する際に駆動、制動力が低下
する。又縦サイピングのトレッド表面における溝開口巾
を０．４ｍｍ以上かつ１．２ｍｍ以下としている。該溝
開口巾を０．４ｍｍ未満とした場合には、成形、加硫型
が損傷しやすく型の耐久性に劣る。他方前記溝開口巾が
１．２ｍｍをこえるとブロックに欠けが生じ易い。[0012] The vertical siping has a ground width (SW) of 0.
．． The tire is located in a range away from the outer edge point E of the contact patch inward in the tire axial direction by a distance of 0.02 times or more and 0.075 times or less. If it is less than 0.02 times, block chipping is likely to occur.
Moreover, when it exceeds 0.075 times, the edge component in the tire radial direction decreases, and the driving and braking force decreases when driving on snowy and icy roads. Further, the groove opening width on the tread surface of the vertical siping is set to be 0.4 mm or more and 1.2 mm or less. When the groove opening width is less than 0.4 mm, the molding and vulcanizing molds are easily damaged and the durability of the molds is poor. On the other hand, if the groove opening width exceeds 1.2 mm, the block is likely to be chipped.
【００１３】さらに縦サイピングの溝深さをトレッド表
面に設ける主溝の溝深さの０．２倍以上かつ０．８倍未
満としている。これにより溝深さが主溝の深さの０．２
倍未満になることにより、トレッド表面の摩耗進行初期
において縦サイピングが消滅し、短期にワンダリング性
能が消滅するのを防ぐ一方、０．８倍をこえることによ
り、タイヤ形成時におけるゴムの流れが悪化するのを防
止することが出来る。Furthermore, the groove depth of the vertical siping is set to be at least 0.2 times and less than 0.8 times the groove depth of the main groove provided on the tread surface. This makes the groove depth 0.2 of the main groove depth.
By less than 0.8 times, vertical siping disappears in the early stages of wear on the tread surface, preventing wandering performance from disappearing in a short period of time, while by exceeding 0.8 times, rubber flow during tire formation is prevented. You can prevent it from getting worse.
【００１４】このように前記した各構成が有機的かつ一
体化することによって、氷雪上の機能を低下させること
なく、わだちが存在する路面走行時におけるワンダリン
グ性能を保持し、操縦安定性を高める一方、生産が可能
となり経済的に提供することが出来る。ワンダリング性
能が保持できるためタイヤのワイド化が容易となり、氷
雪上の走行性能を更に高めることが可能となる。[0014] By organically and unifying each of the above-mentioned components, the vehicle maintains wandering performance when driving on roads with ruts and improves steering stability without deteriorating its functionality on ice and snow. On the other hand, it can be produced and provided economically. Since wandering performance can be maintained, tires can be made wider easily, making it possible to further improve driving performance on ice and snow.
【００１５】[0015]
【実施例】以下本発明の一実施例を図面に基づき説明す
る。図においてスタッドレスタイヤ１は、トレッド表面
２が接地する接地面Ｓ内、しかも該接地面Ｓのタイヤ軸
方向外縁点Ｅ、Ｅ間の長さである接地巾ＳＷの０．０２
倍以上かつ０．０７５倍以下の距離Ｌを前記外縁点Ｅか
らタイヤ軸方向内方に隔てる範囲にタイヤ周方向にのび
る１条の縦サイピング３を設けている。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In the figure, the studless tire 1 has a ground contact width SW of 0.02, which is the length within the contact patch S where the tread surface 2 contacts the ground, and between the tire axial outer edge points E and E of the contact patch S.
A single vertical sipe 3 extending in the tire circumferential direction is provided in a range separating the outer edge point E by a distance L of at least twice as long and not more than 0.075 times in the axial direction of the tire.
【００１６】又スタッドレスタイヤ１は、前記トレッド
部１２の両端からタイヤ半径方向内方にのびるサイドウ
ォール部１３、１３と、該サイドウォール部１３の半径
方向内端に位置するビード部１５、１５とを有し、各ビ
ード部１５、１５に設けるビードコア１６、１６間には
、前記サイドウォール部１３、１３、トレッド部１２を
通るトロイダル状のカーカス１７が架け渡されるととも
に、その半径方向外側かつトレッド部１２内にベルト層
１８を配している。The studless tire 1 also includes sidewall portions 13, 13 extending inward in the radial direction of the tire from both ends of the tread portion 12, and bead portions 15, 15 located at the inner ends of the sidewall portion 13 in the radial direction. A toroidal carcass 17 passing through the sidewall parts 13, 13 and the tread part 12 is bridged between the bead cores 16, 16 provided in each bead part 15, 15, and the radially outer side and tread A belt layer 18 is disposed within the portion 12.
【００１７】前記ビード部１５には、そのビード底面１
５ａが着座するビードシート部を具えるリムＪが嵌着さ
れ、該リムＪと前記トレッド部１２、サイドウォール部
１３、ビード部１５の内面がなす内腔Ｏには内圧を付与
することが出来る。The bead portion 15 has a bead bottom surface 1.
A rim J having a bead seat portion on which the rim 5a is seated is fitted, and internal pressure can be applied to the inner cavity O formed by the rim J and the inner surfaces of the tread portion 12, the sidewall portion 13, and the bead portion 15. .
【００１８】又トレッド部１２の表面である前記トレッ
ド表面２には図２に示す如くタイヤ周方向に周回する２
本の直線溝と３本のジグザグ溝とからなる縦溝群、及び
該縦溝の間又は縦溝、トレッド端縁間を継ぐ複数の横溝
からなる横溝群とにより区切られた複数のブロックＢ─
が形成され、前記各縦溝、横溝によりトレッド表面２の
主溝Ｇが形成される。Further, on the tread surface 2, which is the surface of the tread portion 12, as shown in FIG.
A plurality of blocks B separated by a longitudinal groove group consisting of a straight groove and three zigzag grooves, and a lateral groove group consisting of a plurality of lateral grooves connecting between the longitudinal grooves or between the longitudinal grooves and the tread edges.
are formed, and the main grooves G of the tread surface 2 are formed by the respective longitudinal grooves and lateral grooves.
【００１９】本実施例では、前記主溝Ｇの溝深さは、縦
溝、横溝ともに同じ溝深さｄ１として形成される。又前
記各ブロックには、タイヤ軸方向にのびる横サイピング
１９が各ブロックＢにつき３本ずつ条設されており、氷
上、雪上走行における路面とのグリップ性を高め登坂能
力と氷上制動性能との向上を図っている。In this embodiment, the main groove G has the same groove depth d1 for both the longitudinal groove and the lateral groove. In addition, each block is provided with three horizontal sipes 19 extending in the tire axial direction for each block B, which improves grip with the road surface when driving on ice or snow, and improves hill climbing ability and braking performance on ice. We are trying to
【００２０】縦サイピング３は、本例では前記主溝Ｇを
なす横溝を横切りタイヤ周方向に周回する直線溝であっ
て、トレッド表面２で開口するとともに、該開口部を通
る該トレッド表面２の接線に直交する法線Ｎ上にその深
さ方向中心線を位置させている。In this example, the vertical sipes 3 are straight grooves that cross the lateral grooves forming the main groove G and go around in the circumferential direction of the tire. The center line in the depth direction is located on the normal line N that is perpendicular to the tangent line.
【００２１】縦サイピング３は、トレッド表面２におけ
る溝開口巾ｗを前記した如く０．４〜１．２ｍｍの範囲
としている。なお前記溝開口部のブロックＢの欠けを防
止するには前記溝開口巾ｗを０．４〜０．８ｍｍの範囲
とするのがより好ましい。The vertical siping 3 has a groove opening width w on the tread surface 2 in the range of 0.4 to 1.2 mm as described above. In order to prevent the block B at the groove opening from chipping, it is more preferable that the groove opening width w is in the range of 0.4 to 0.8 mm.
【００２２】又縦サイピング３の溝深さｄ２は前記の如
く主溝Ｇの溝深さｄ１の０．２倍以上０．８倍以下とす
るが、０．３倍以上０．５倍以下の範囲とするのが耐久
性の向上及び品質の安定の観点から好ましい。Further, the groove depth d2 of the vertical siping 3 is set to be 0.2 times or more and 0.8 times or less than the groove depth d1 of the main groove G as described above, but it is 0.3 times or more and 0.5 times or less. From the viewpoint of improving durability and stabilizing quality, it is preferable to set it within this range.
【００２３】なお縦サイピング３は、図３（Ａ）に示す
如くブロックＢの中間位置で途切れてもよく、又図３（
Ｂ）のように２条の縦サイピング３、３を平行に配する
ことも出来、図３（Ｃ）〜（Ｅ）のように２条の縦サイ
ピング３、３の一方、又は双方に途切れ部を設けてもよ
い。The vertical siping 3 may be discontinued at an intermediate position of the block B as shown in FIG.
It is also possible to arrange two vertical sipes 3, 3 in parallel as shown in B), or there is a break in one or both of the two vertical sipes 3, 3 as shown in Figs. 3(C) to (E). may be provided.
【００２４】さらに図４（Ａ）〜（Ｄ）のように縦サイ
ピング３Ａをジグザグ状に形成することも出来る。この
ように本発明は種々な態様のものに変形できる。Furthermore, the vertical sipes 3A can be formed in a zigzag shape as shown in FIGS. 4(A) to 4(D). As described above, the present invention can be modified into various embodiments.
【００２５】[0025]
【実施例】タイヤサイズが１９５／７０ Ｒ１４であ
り、かつ図１に示す構成と図２に示すパターンを有する
タイヤ（実施例）について試作を行い、乾燥路における
走行性能を調査した。なお縦サイピングがない以外は図
１と略同一のパターンを有するタイヤ比較例について併
せて製作し性能を比較した。[Example] A tire (Example) having a tire size of 195/70 R14 and having the configuration shown in FIG. 1 and the pattern shown in FIG. 2 was prototyped and its running performance on a dry road was investigated. A comparative tire having a pattern substantially the same as that shown in FIG. 1 except for the absence of vertical siping was also manufactured and the performance was compared.
【００２６】テストは次の条件により行った。試供タイ
ヤに１．９ｋｇ／ｃｍ２の内圧を付加し、該タイヤをト
ヨタ製のマークＩＩグランテに装着するとともにテスト
ロードを走行した。なお乗員は１名である。The test was conducted under the following conditions. An internal pressure of 1.9 kg/cm2 was applied to the sample tire, and the tire was mounted on a Toyota Mark II Grante and run on a test road. There is only one crew member.
【００２７】テストの結果を表１、表２に示す。表１は
通常の乾燥した路面におけるテスト結果を、又表２はわ
だちにおけるテスト結果をそれぞれ示す。The test results are shown in Tables 1 and 2. Table 1 shows the test results on a normal dry road surface, and Table 2 shows the test results on ruts.
【００２８】なお判定はドライバのフィーリングによっ
て行い５段階法にて評価した。評価は数値が大なるほど
良好である。The judgment was made based on the driver's feeling and evaluated using a 5-step method. The higher the numerical value, the better the evaluation.
【００２９】[0029]
【表１】[Table 1]
【００３０】[0030]
【表２】[Table 2]
【００３１】わだち走行時において、比較例のものがわ
だちにひっかかり手応えも壁があるのに対して、実施例
のものはわだちとられ感がスムースであり、又飛出し感
もよく、ひっかかりがなくなりとても良好であった。When driving in ruts, the comparative example gets stuck in the ruts and has a wall in response, whereas the example has a smooth feeling of getting rid of the ruts, has a good flying feel, and does not get caught. It was very good.
【００３２】又、平地路においても、実施例のものは比
較例のものに比べて操縦安定性が優れ乗心地、ノイズは
両者略同等であることが確認出来た。It was also confirmed that even on flat roads, the steering stability of the example was superior to that of the comparative example, and ride comfort and noise were approximately the same.
【００３３】[0033]
【発明の効果】叙上の如く本発明のスタッドレスタイヤ
は、接地面のタイヤ軸方向外縁点の内方かつ外縁点近傍
に溝開口巾と溝深さとを規制した縦サイピングを設けた
ため、氷上の走行性能、積雪路面上の走行性能を保持し
つつ乾燥路、特にわだちにおけるワンダリング性を向上
することが出来る。Effects of the Invention As described above, the studless tire of the present invention has vertical sipes that regulate the groove opening width and groove depth on the inner side of the tire's axially outer edge point and near the outer edge point of the contact patch, so that it can be used easily on ice. It is possible to improve wandering performance on dry roads, especially in ruts, while maintaining running performance and running performance on snow-covered roads.
【図１】本発明の一実施例を示す断面図である。FIG. 1 is a sectional view showing an embodiment of the present invention.
【図２】そのトレッド表面を示す展開平面図である。FIG. 2 is a developed plan view showing the tread surface.
【図３】縦サイピングの他の例を略示する平面図である
。FIG. 3 is a plan view schematically showing another example of vertical siping.
【図４】縦サイピングの他の例を略示する平面図である
。FIG. 4 is a plan view schematically showing another example of vertical siping.
２ トレッド表面 ３ 縦サイピング Ｅ 外縁点 ｄ１ 主溝の溝深さ ｄ２ 縦サイピングの溝深さ Ｇ 主溝 Ｊ リム Ｓ 接地面 ＳＷ 接地巾 ｗ 溝開口巾 2 Tread surface 3 Vertical siping E Outer edge point d1 Groove depth of main groove d2 Groove depth of vertical siping G Main groove J rim S Ground surface SW Ground width w Groove opening width
Claims (1)
とともに正規荷重を付加した正規状態においてトレッド
表面が接地する接地面内、しかも該接地面のタイヤ軸方
向外縁点（Ｅ）、（Ｅ）間の長さである接地巾（ＳＷ）
の０．０２倍以上かつ０．０７５倍以下の距離を前記外
縁点（Ｅ）からタイヤ軸方向内方に隔てる範囲に、タイ
ヤ周方向にのびるとともに溝開口巾を０．４ｍｍ以上か
つ１．２ｍｍ以下、溝深さを前記トレッド表面に設ける
主溝の溝深さの０．２倍以上かつ０．８倍以下とした少
なくとも１条以上の縦サイピングを設けてなるスタッド
レスタイヤ。Claim 1: Within the contact patch where the tread surface contacts the ground in a normal state where the tire is mounted on a regular rim, filled with a regular internal pressure, and a regular load is applied, and the outer edge points (E), (E) of the tire axial direction of the contact patch. ) is the ground width (SW)
Extending in the tire circumferential direction and having a groove opening width of 0.4 mm or more and 1.2 mm in a range separating the outer edge point (E) inward in the tire axial direction by a distance of 0.02 times or more and 0.075 times or less of Hereinafter, a studless tire is provided with at least one vertical siping whose groove depth is 0.2 times or more and 0.8 times or less the groove depth of the main groove provided on the tread surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2416199A JPH04232104A (en) | 1990-12-28 | 1990-12-28 | Studless tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2416199A JPH04232104A (en) | 1990-12-28 | 1990-12-28 | Studless tire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04232104A true JPH04232104A (en) | 1992-08-20 |
Family
ID=18524440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2416199A Pending JPH04232104A (en) | 1990-12-28 | 1990-12-28 | Studless tire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04232104A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5582661A (en) * | 1993-08-03 | 1996-12-10 | Sp Reifenwerke Gmbh | Tread for pneumatic vehicle tires |
| US7832439B2 (en) * | 2007-03-15 | 2010-11-16 | Sumitomo Rubber Industries, Ltd. | Pneumatic tire having recess in buttress face |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63265706A (en) * | 1987-04-23 | 1988-11-02 | Yokohama Rubber Co Ltd:The | Flat radial tire for small truck |
-
1990
- 1990-12-28 JP JP2416199A patent/JPH04232104A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63265706A (en) * | 1987-04-23 | 1988-11-02 | Yokohama Rubber Co Ltd:The | Flat radial tire for small truck |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5582661A (en) * | 1993-08-03 | 1996-12-10 | Sp Reifenwerke Gmbh | Tread for pneumatic vehicle tires |
| US7832439B2 (en) * | 2007-03-15 | 2010-11-16 | Sumitomo Rubber Industries, Ltd. | Pneumatic tire having recess in buttress face |
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